Merge pull request #1023 from ciomaire/write_kafka_ldflags

when --with-librdkafka arg is not a path searched by linker

diff --combined configure.ac
index f62dfb3,e6b3693..448bb4a
--- 1/configure.ac
--- 2/configure.ac
+++ b/configure.ac
@@@ -1190,7 -1190,6 +1190,7 @@@ FILE *fh
  struct mntent *me;
  fh = setmntent ("/etc/mtab", "r");
  me = getmntent (fh);
 +return(me->mnt_passno);
  ]]]
                        )],
                        [c_cv_have_one_getmntent="yes"],
@@@ -1210,7 -1209,6 +1210,7 @@@
                                 int status;
                                 fh = fopen ("/etc/mnttab", "r");
                                 status = getmntent (fh, &mt);
 +                               return(status);
  ]]]
                        )],
                        [c_cv_have_two_getmntent="yes"],
@@@ -2086,10 -2084,6 +2086,10 @@@ f
  
  # --with-java {{{
  with_java_home="$JAVA_HOME"
 +if test "x$with_java_home" = "x"
 +then
 +      with_java_home="/usr/lib/jvm"
 +fi
  with_java_vmtype="client"
  with_java_cflags=""
  with_java_libs=""
@@@ -2114,7 -2108,7 +2114,7 @@@ the
        if test -d "$with_java_home"
        then
                AC_MSG_CHECKING([for jni.h])
 -              TMPVAR=`find "$with_java_home" -name jni.h -type f -exec 'dirname' '{}' ';' 2>/dev/null | head -n 1`
 +              TMPVAR=`find -L "$with_java_home" -name jni.h -type f -exec 'dirname' '{}' ';' 2>/dev/null | head -n 1`
                if test "x$TMPVAR" != "x"
                then
                        AC_MSG_RESULT([found in $TMPVAR])
@@@ -2124,7 -2118,7 +2124,7 @@@
                fi
  
                AC_MSG_CHECKING([for jni_md.h])
 -              TMPVAR=`find "$with_java_home" -name jni_md.h -type f -exec 'dirname' '{}' ';' 2>/dev/null | head -n 1`
 +              TMPVAR=`find -L "$with_java_home" -name jni_md.h -type f -exec 'dirname' '{}' ';' 2>/dev/null | head -n 1`
                if test "x$TMPVAR" != "x"
                then
                        AC_MSG_RESULT([found in $TMPVAR])
@@@ -2134,7 -2128,7 +2134,7 @@@
                fi
  
                AC_MSG_CHECKING([for libjvm.so])
 -              TMPVAR=`find "$with_java_home" -name libjvm.so -type f -exec 'dirname' '{}' ';' 2>/dev/null | head -n 1`
 +              TMPVAR=`find -L "$with_java_home" -name libjvm.so -type f -exec 'dirname' '{}' ';' 2>/dev/null | head -n 1`
                if test "x$TMPVAR" != "x"
                then
                        AC_MSG_RESULT([found in $TMPVAR])
@@@ -2146,7 -2140,7 +2146,7 @@@
                if test "x$JAVAC" = "x"
                then
                        AC_MSG_CHECKING([for javac])
 -                      TMPVAR=`find "$with_java_home" -name javac -type f 2>/dev/null | head -n 1`
 +                      TMPVAR=`find -L "$with_java_home" -name javac -type f 2>/dev/null | head -n 1`
                        if test "x$TMPVAR" != "x"
                        then
                                JAVAC="$TMPVAR"
@@@ -2158,7 -2152,7 +2158,7 @@@
                if test "x$JAR" = "x"
                then
                        AC_MSG_CHECKING([for jar])
 -                      TMPVAR=`find "$with_java_home" -name jar -type f 2>/dev/null | head -n 1`
 +                      TMPVAR=`find -L "$with_java_home" -name jar -type f 2>/dev/null | head -n 1`
                        if test "x$TMPVAR" != "x"
                        then
                                JAR="$TMPVAR"
@@@ -3178,7 -3172,6 +3178,7 @@@ the
  ]]],
  [[[
    int val = PCAP_ERROR_IFACE_NOT_UP;
 +  return(val);
  ]]]
                       )],
                       [c_cv_libpcap_have_pcap_error_iface_not_up="yes"],
@@@ -3729,6 -3722,7 +3729,7 @@@ AC_ARG_WITH(librdkafka, [AS_HELP_STRING
    then
      with_librdkafka_cppflags="-I$withval/include"
      with_librdkafka_ldflags="-L$withval/lib"
+     with_librdkafka_rpath="$withval/lib"
      with_librdkafka="yes"
    else
      with_librdkafka="$withval"
@@@ -3740,6 -3734,9 +3741,9 @@@
  SAVE_CPPFLAGS="$CPPFLAGS"
  SAVE_LDFLAGS="$LDFLAGS"
  
+ CPPFLAGS="$CPPFLAGS $with_librdkafka_cppflags"
+ LDFLAGS="$LDFLAGS $with_librdkafka_ldflags"
+ 
  if test "x$with_librdkafka" = "xyes"
  then
        AC_CHECK_HEADERS(librdkafka/rdkafka.h, [with_librdkafka="yes"], [with_librdkafka="no (librdkafka/rdkafka.h not found)"])
@@@ -3755,7 -3752,12 +3759,12 @@@ if test "x$with_librdkafka" = "xyes
  then
        BUILD_WITH_LIBRDKAFKA_CPPFLAGS="$with_librdkafka_cppflags"
        BUILD_WITH_LIBRDKAFKA_LDFLAGS="$with_librdkafka_ldflags"
-       BUILD_WITH_LIBRDKAFKA_LIBS="-lrdkafka"
+       if test "x$with_librdkafka_rpath" != "x"
+       then
+               BUILD_WITH_LIBRDKAFKA_LIBS="-Wl,-rpath,$with_librdkafka_rpath -lrdkafka"
+       else
+               BUILD_WITH_LIBRDKAFKA_LIBS="-lrdkafka"
+       fi
        AC_SUBST(BUILD_WITH_LIBRDKAFKA_CPPFLAGS)
        AC_SUBST(BUILD_WITH_LIBRDKAFKA_LDFLAGS)
        AC_SUBST(BUILD_WITH_LIBRDKAFKA_LIBS)